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Application filed by Z Za Korabno Mash MajakfiledCriticalZ Za Korabno Mash Majak
Priority to BG8870889ApriorityCriticalpatent/BG48360A1/en
Publication of BG48360A1publicationCriticalpatent/BG48360A1/en
The device is applied in the machine building industry for the processing of front faces. The design allows the production of drills with small diameters and improves the versatility of hardness of the processed materials. The core-drill has a collet-shaped body (7) with a conical surface (6) at the front end, which is in contact with the internal conical surface of a bush (4). The bush (4) is axially attached with a movable joint on the body (7) by means of a nut (3), wound up around the tail (2) of the body (7). The cutting elements (1) are mounted in radial front grooves, produced respectively in the body (7) and in the bush (4).<IMAGE>
BG8870889A1989-06-051989-06-05Cutting device with mechanically fastened cutting elements
BG48360A1
(en)